CHERIE K. BERRY JOHN R. BOGNER, JR.
COMMISSIONER CONSULTATIVE SERVICES BUREAU CHIEF
DIVISION OF OCCUPATIONAL SAFETY AND HEALTH
RESPIRATORY PROTECTION PROGRAM
This sample program is provided to assist you as an employer in developing programs
tailored to your own operation. We encourage you to copy, expand, modify and
customize this sample as necessary to accomplish this goal.
This document is provided as a compliance aid, but does not constitute a legal interpretation of OSHA
Standards, nor does it replace the need to be familiar with, and follow, the actual OSHA Standards
(including any North Carolina specific changes.) Though this document is intended to be consistent with
OSHA Standards, if an area is considered by the reader to be inconsistent, the OSHA standard should be
followed. Of course, we welcome your comments and feedback!
The North Carolina Department of Labor OSH Consultative Services Bureau can be contacted for further
assistance such as helping you set up your individual program and even with on-site surveys. Feel free to
contact us at 1-800-NCLABOR or at 919-807-2899. You may also want to visit our website at
Remember: A written safety/health program is only effective if it is put into place!
1101 MAIL SERVICE CENTER, RALEIGH. NORTH CAROLINA 27699-1101
(919) 807-2899 FAX (919) 807-2902 JOHN.BOGNER@NCLABOR.COM
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In the Respiratory Protection program, hazard assessment and selection of proper respiratory PPE
are conducted in the same manner as for other types of PPE. In the control of those occupational
diseases caused by breathing air contaminated with harmful dusts, fogs, fumes, mists, gases,
smokes, sprays, or vapors, the primary objective shall be to prevent atmospheric contamination.
This shall be accomplished as far as feasible by accepted engineering control measures (for
example, enclosure or confinement of the operation, general and local ventilation, and
substitution of less toxic materials). When effective engineering controls are not feasible, or
while they are being instituted, appropriate respirators shall be used. References: OSHA
Standards Respiratory Protection (29 CFR 1910.134)
All Employees shall follow the requirements of the Respiratory Protection Program.
implement the requirements of this program;
provide a selection of respirators as required;
enforce all provisions of this program; and
appoint an individual to administer the respiratory protection program.
review sanitation/storage procedures;
ensure respirators are properly stored, inspected and maintained;
monitor compliance for this program;
provide training for affected Employees;
review compliance and ensure monthly inspection of all respirators; and
provide respirator fit testing.
Designated Occupational Health Care Provider
conduct medical aspects of program.
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_______________________will be designated as the program administrator who is qualified by
appropriate training or experience that is commensurate with the complexity of the program to
administer or oversee the respiratory protection program and conduct the required evaluations of
Voluntary Use of Respirators
OSHA requires that the voluntary use of respirators (i.e., when respirators are not required by the
company), be controlled as strictly as if their use were required. So, any employee wearing a
respirator voluntarily shall fall under this respiratory protection program, be issued a copy of
Appendix D of 1910.134, and fill out a medical questionnaire (Appendix C) and have it
evaluated by an appropriate individual. Training will be conducted on the proper storage,
cleaning, and maintenance of the respirator. All steps will be taken to ensure that the respirator
does not pose a health risk to the person donning it. Exception: Employees whose only use of
respirators involves the voluntary use of filtering (non-sealing) face pieces (dust masks, with one
OR two straps) do not fall under this program.
Evaluations of the workplace are necessary to ensure that the written respiratory protection
program is being properly implemented. This includes consulting with employees to ensure that
they are using the respirators properly. Evaluations shall be conducted as necessary to ensure that
the provisions of the current written program are being effectively implemented and that it
continues to be effective.
Program evaluation will include discussions with employees required to use respirators to assess
the employees' views on program effectiveness and to identify any problems. Any problems that
are identified during this assessment shall be corrected. Factors to be assessed include, but are
not limited to:
Respirator fit (including the ability to use the respirator without interfering with effective
Appropriate respirator selection for the hazards to which the employee is exposed;
Proper respirator use under the workplace conditions the employee encounters; and
Proper respirator maintenance.
______________________________ (Company name) will retain written information regarding
medical evaluations, fit testing, and the respirator program. This information will facilitate
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employee involvement in the respirator program, assist the Company in auditing the adequacy of
the program, and provide a record for compliance determinations by OSHA.
Training and Information
Effective training for employees who are required to use respirators is essential. The training
must be comprehensive, understandable, and recur annually, and more often if necessary.
Training will be provided prior to requiring the employee to use a respirator in the workplace.
The training shall ensure that each employee can demonstrate knowledge of at least the
Why the respirator is necessary and how improper fit, usage, or maintenance can
compromise the protective effect of the respirator;
Limitations and capabilities of the respirator;
How to use the respirator effectively in emergency situations, including situations in
which the respirator malfunctions;
How to inspect, put on and remove, use, and check the seals of the respirator;
What the procedures are for maintenance and storage of the respirator;
How to recognize medical signs and symptoms that may limit or prevent the effective use
of respirators; and
The general requirements of this program.
Retraining shall be conducted annually and when:
changes in the workplace or the type of respirator render previous training obsolete;
inadequacies in the employee's knowledge or use of the respirator indicate that the
employee has not retained the requisite understanding or skill; and
other situation arises in which retraining appears necessary to ensure safe respirator use.
Training will be conducted by instructors who have adequate knowledge of OSHA training
requirements. Training is divided into the following sections:
1. Overview of the Company Respiratory Protection Program & OSHA Standard;
2. Respiratory Protection Safety Procedures;
3. Respirator Selection;
4. Respirator Operation and Use;
5. Why the respirator is necessary;
6. How improper fit, usage, or maintenance can compromise the protective effect;
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7. Limitations and capabilities of the respirator;
8. How to use the respirator effectively in emergency situations, including respirator
9. How to inspect, put on and remove, use, and check the seals of the respirator;
10. What the procedures are for maintenance and storage of the respirator;
11. How to recognize medical signs and symptoms that may limit or prevent the
effective use of respirators; and
12. Change out schedule and procedure for air purifying respirators (APR).
For each type and model of respirator used.
Hands-on respirator Training
1. Respirator Inspection;
2. Respirator cleaning and sanitizing;
3. Record Keeping;
4. Respirator Storage;
5. Respirator Fit Check; and
Basic Respiratory Protection Safety Procedures
1. Only authorized and trained Employees may use Respirators. Those Employees may use only
the Respirator that they have been trained on and properly fitted to use.
2. Only Physically Qualified Employees may be trained and authorized to use Respirators. A
pre-authorization and annual certification by a qualified physician will be required and
maintained. Any changes in an Employees health or physical characteristics will be reported
to the program administrator and will be evaluated by a qualified physician.
3. Only the proper prescribed respirator or SCBA may be used for the job or work environment.
Air-purifying respirators may be worn in work environments when oxygen levels are 19.5
percent to 23.5 percent and when the appropriate cartridge, (as determined by the
manufacturer and approved by NIOSH), for the known hazardous substance is used. SCBAs
will be worn in oxygen deficient and oxygen rich environments (below 19.5 percent or above
23.5 percent oxygen).
4. Employees working in environments where a sudden release of a hazardous substance is
likely will wear an appropriate respirator for that hazardous substance (example: Employees
working in an ammonia compressor room will have an ammonia APR respirator on their
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5. Only SCBAs will be used in oxygen deficient environments, environments with an unknown
hazardous substance or unknown quantity of a known hazardous substance, or any
environment that is determined "Immediately Dangerous to Life or Health" (IDLH).
6. Employees with respirators loaned on "permanent check out" will be responsible for the
sanitation, proper storage and security. Respirators damaged by normal wear will be repaired
or replaced by the Company when returned.
7. The last Employee using a respirator and/or SCBA that is available for general use will be
responsible for proper storage and sanitation. Monthly and after each use, all respirators will
be inspected with documentation to assure its availability for use.
8. All respirators will be located in a clean, convenient and sanitary location.
9. In the event that Employees must enter a confined space; work in environments with
hazardous substances that would be dangerous to life or health should an RPE (Respiratory
Protection Equipment) fail (a SCBA is required in this environment); and/or conduct a
HAZMAT entry, a "buddy system" detail will be used with a Safety Watchman with constant
voice, visual or signal line communication. Employees will follow the established Emergency
Response Program and/or Confined Space Entry Program when applicable.
10. Management will establish and maintain surveillance of jobs and work place conditions and
degree of Employee exposure or stress to maintain the proper procedures and to provide the
11. Management will establish and maintain safe operation procedures for the safe use of RPE
with strict enforcement and disciplinary action for failure to follow all general and specific
safety rules. Standard Operation Procedures for General RPE use will be maintained as an
attachment to the Respiratory Protection Program and Standard Operation Procedures for RPE
use under emergency response situations will be maintained as an attachment to the
Emergency Response Program.
Selection of Respirators
The Company has evaluated the respiratory hazard(s) in each workplace, identified relevant
workplace and user factors and has based respirator selection on these factors. Also included are
estimates of employee exposures to respiratory hazard(s) and an identification of the
contaminant's chemical state and physical form. This selection has included appropriate
protective respirators for use in IDLH atmospheres, and has limited the selection and use of air-
purifying respirators. All selected respirators are NIOSH certified .
List company air contaminants, estimates of exposure and respirators to be used with those
contaminants in this section.
Filter Classifications - These classifications are marked on the filter or filter package
N-Series: Not Oil Resistant
Approved for non-oil particulate contaminants
Examples: dust, fumes, mists not containing oil
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R-Series: Oil Resistant
Approved for all particulate contaminants, including those containing oil
Examples: dusts, mists, fumes
Time restriction of 8 hours when oils are present
P-Series: Oil Proof
Approved for all particulate contaminants including those containing oil
Examples: dust, fumes, mists
See Manufacturer's time use restrictions on packaging
Respirators for IDLH atmospheres.
The following respirators will be used in IDLH atmospheres:
A full face piece pressure demand SCBA certified by NIOSH for a minimum service life
of thirty minutes, or
A combination full face piece pressure demand supplied-air respirator (SAR) with
auxiliary self-contained air supply.
Respirators provided only for escape from IDLH atmospheres shall be NIOSH-certified
for escape from the atmosphere in which they will be used.
Respirators for atmospheres that are not IDLH.
The respirators selected shall be adequate to protect the health of the employee and ensure
compliance with all other OSHA statutory and regulatory requirements, under routine and
reasonably foreseeable emergency situations. The respirator selected shall be appropriate
for the chemical state and physical form of the contaminant.
Identification of Filters & Cartridges
All filters and cartridges shall be labeled and color coded with the NIOSH approval label. The
user shall ensure that the label is not removed and remains legible. A change out schedule for
filters and cartrdige has been developed to ensure these elements of the respirators remain
Respirator Filter & Canister Replacement
An important part of the Respiratory Protection Program includes identifying the useful life of
cartrdiges and filters used on air-purifying respirators. Each filter and cartridge shall be equipped
with an end-of-service-life indicator (ESLI) certified by NIOSH for the contaminant; or
If there is no ESLI appropriate for the conditions, a change schedule for canisters and cartridges
based on objective information or data that will ensure that canisters and cartridges are changed
before the end of their service life shall be implemented.
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Filter & Cartridge Change Schedule
Stock of spare filers and cartridges shall be maintained to allow immediate change when required
or desired by the employee.
Cartridges shall be changed based on the most limiting factor below:
Prior to expiration date;
Manufactures recommendations for the specific use and environment;
After each use;
When requested by employee;
When contaminant odor is detected; and
When restriction to air flow has occurred as evidenced by increase effort by user to
Cartridges shall remain in their original sealed packages until needed for immediate use.
Filters shall be changed on the most limiting factor below:
Prior to expiration date;
Manufactures recommendations for the specific use and environment;
When requested by employee;
When contaminant odor is detected;
When restriction to air flow has occurred as evidenced by increase effort by user to
breathe normally; and
When discoloring of the filter media is evident.
Filters shall remain in their original sealed package until needed for immediate use.
Respiratory Protection Schedule by Job and Working Condition
The Company maintains a Respiratory Protection Schedule by Job and Working Condition. This
schedule is provided to each authorized and trained Employee. The Schedule provides the
Type of Respirator or SCBA Required;
Type of Filter/Canister Required;
Location of Respirator or SCBA; and
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Filter/Cartridge change out schedule.
The schedule will be reviewed and updated at least annually and whenever any changes are made
in the work environments, machinery, equipment, or processes or if respirator different respirator
models are introduced or existing models are removed.
Permanent respirator schedule assignments are:
Each person who engages in welding will have their own company provided dust-mist-fume
filter APR. This respirator will be worn during all welding operations.
(List others, as appropriate)
Physical and Medical Qualifications
Records of medical evaluations must be retained and made available in accordance with 29 CFR
Medical evaluation required
Using a respirator may place a physiological burden on employees that varies with the type of
respirator worn, the job and workplace conditions in which the respirator is used, and the medical
status of the employee. The company provides a medical evaluation to determine the employee's
ability to use a respirator, before the employee is fit tested or required to use the respirator in the
Medical evaluation procedures
The employee will be provided a medical questionnaire by the designated Occupational Health
Follow-up medical examination
The company shall ensure that a follow-up medical examination is provided for an employee
who gives a positive response to any question among questions in Part B of the questionnaire or
whose initial medical examination demonstrates the need for a follow-up medical examination.
The follow-up medical examination shall include any medical tests, consultations, or diagnostic
procedures that the Physician deems necessary to make a final determination.
Administration of the medical questionnaire and examinations
The medical questionnaire and examinations shall be administered confidentially during the
employee's normal working hours or at a time and place convenient to the employee. The
medical questionnaire shall be administered in a manner that ensures that the employee
understands its content. The company shall provide the employee with an opportunity to discuss
the questionnaire and examination results with the Physician.
Supplemental information for the Physician
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The following information must be provided to the Physician before the Physician makes a
recommendation concerning an employee's ability to use a respirator
The type and weight of the respirator to be used by the employee;
The duration and frequency of respirator use (including use for rescue and escape);
The expected physical work effort;
Additional protective clothing and equipment to be worn;
Temperature and humidity extremes that may be encountered; and
Any supplemental information provided previously to the Physician regarding an
employee need not be provided for a subsequent medical evaluation if the information
and the Physician remain the same.
The Company has provided the Physician with a copy of the written respiratory protection
program and a copy of the OSHA Standard 29 CFR1910.134.
In determining the employee's ability to use a respirator, the Company shall obtain a written
recommendation regarding the employee's ability to use the respirator from the Physician. The
recommendation shall provide only the following information:
Any limitations on respirator use related to the medical condition of the employee, or
relating to the workplace conditions in which the respirator will be used, including
whether or not the employee is medically able to use the respirator;
The need, if any, for follow-up medical evaluations;
A statement that the Physician has provided the employee with a copy of the Physician's
written recommendation; and
If the respirator is a negative pressure respirator and the Physician finds a medical
condition that may place the employee's health at increased risk if the respirator is used,
the Company shall provide an APR if the Physician's medical evaluation finds that the
employee can use such a respirator. If a subsequent medical evaluation finds that the
employee is medically able to use a negative pressure respirator, then the Company is no
longer required to provide an APR
Additional Medical Evaluations
At a minimum, the Company shall provide additional medical evaluations that comply with the
requirements of this section if:
An employee reports medical signs or symptoms that are related to ability to use a
A Physician, supervisor, or the respirator program administrator informs the Company
that an employee needs to be reevaluated;
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Information from the respiratory protection program, including observations made during
fit testing and program evaluation, indicates a need for employee reevaluation; and
A change occurs in workplace conditions (physical work effort, protective clothing,
temperature, etc.) that may result in a substantial increase in the physiological burden
placed on an employee.
Respirator Fit Testing
Before an employee is required to use any respirator with a negative or positive pressure tight-
fitting face piece, the employee must be fit tested with the same make, model, style, and size of
respirator that will be used. The Company shall ensure that an employee using a tight-fitting face
piece respirator is fit tested prior to initial use of the respirator, whenever a different respirator
face piece (size, style, model or make) is used, and at least annually thereafter
The Company has established a record of the qualitative and quantitative fit tests administered to
The name or identification of the employee tested;
Type of fit test performed;
Specific make, model, style, and size of respirator tested;
Date of test; and
The pass/fail results for QLFTs or the fit factor and strip chart recording or other
recording of the test results for QNFTs.
Additional fit tests will be conducted whenever the employee reports, or the Company,
Physician, supervisor, or program administrator makes visual observations of, changes in the
employee's physical condition that could affect respirator fit. Such conditions include, but are not
limited to, facial scarring, dental changes, cosmetic surgery, or an obvious change in body
If after passing a QLFT or QNFT, the employee notifies the Company, program administrator,
supervisor, or Physician that the fit of the respirator is unacceptable, the employee shall be given
a reasonable opportunity to select a different respirator face piece and to be retested.
Types of Fit Tests
The fit test shall be administered using an OSHA-accepted QLFT or QNFT protocol. The
OSHA-accepted QLFT and QNFT protocols and procedures are contained in Appendix A of
OSHA Standard 29 CFR 1910.134.
QLFT may only be used to fit test negative pressure air-purifying respirators that must
achieve a fit factor of 100 or less.
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If the fit factor, as determined through an OSHA-accepted QNFT protocol, is equal to or
greater than 100 for tight-fitting half face pieces, or equal to or greater than 500 for tight-
fitting full face pieces, the QNFT has been passed with that respirator.
Fit testing of tight-fitting atmosphere-supplying respirators and tight-fitting powered air-
purifying respirators shall be accomplished by performing quantitative or qualitative fit
testing in the negative pressure mode, regardless of the mode of operation (negative or
positive pressure) that is used for respiratory protection.
Qualitative fit testing of these respirators shall be accomplished by temporarily
converting the respirator user's actual face piece into a negative pressure respirator with
appropriate filters, or by using an identical negative pressure air-purifying respirator face
piece with the same sealing surfaces as a surrogate for the atmosphere-supplying or
powered air-purifying respirator face piece.
Quantitative fit testing of these respirators shall be accomplished by modifying the face
piece to allow sampling inside the face piece in the breathing zone of the user, midway
between the nose and mouth. This requirement shall be accomplished by installing a
permanent sampling probe onto a surrogate face piece, or by using a sampling adapter
designed to temporarily provide a means of sampling air from inside the face piece.
Any modifications to the respirator face piece for fit testing shall be completely removed,
and the face piece restored to NIOSH approved configuration, before that face piece can
be used in the workplace.
Fit test records shall be retained for respirator users until the next fit test is administered. Written
materials required to be retained shall be made available upon request to affected employees.
Respirator Operation and Use
Respirators will only be used following the respiratory protection safety procedures established
in this program. The Operations and Use Manuals for each type of respirator will be maintained
by the Program Administrator and be available to all qualified users.
Surveillance by the direct supervisor shall be maintained of work area conditions and degree of
employee exposure or stress. When there is a change in work area conditions or degree of
employee exposure or stress that may affect respirator effectiveness, the Company shall
reevaluate the continued effectiveness of the respirator.
For continued protection of respirator users, the following general use rules apply:
Users shall not remove respirators while in a hazardous environment;
Respirators are to be stored in sealed containers out of harmful atmospheres;
Store respirators away from heat and moisture;
Store respirators such that the sealing area does not become distorted or warped; and
Store respirator such that the face piece is protected.
Face piece seal protection
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The Company does not permit respirators with tight-fitting face pieces to be worn by employees
Facial hair that comes between the sealing surface of the face piece and the face or that
interferes with valve function; and/or
Any condition that interferes with the face-to-face piece seal or valve function.
If an employee wears corrective glasses or goggles or other personal protective equipment, the
Company shall ensure that such equipment is worn in a manner that does not interfere with the
seal of the face piece to the face of the user.
Continuing Effectiveness of Respirators
The Company shall ensure that employees leave the respirator use area:
To wash their faces and respirator face pieces as necessary to prevent eye or skin irritation
associated with respirator use;
If they detect vapor or gas breakthrough, changes in breathing resistance, or leakage of
the face piece; and
To replace the respirator or the filter, cartridge, or canister elements.
If the employee detects vapor or gas breakthrough, changes in breathing resistance, or leakage of
the face piece, the Company will replace or repair the respirator before allowing the employee to
return to the work area.
Procedures for IDLH atmospheres
For all IDLH atmospheres, the Company shall ensure that:
One employee or, when needed, more than one employee is located outside the IDLH
Visual, voice, or signal line communication is maintained between the employee(s) in the
IDLH atmosphere and the employee(s) located outside the IDLH atmosphere;
The employee(s) located outside the IDLH atmosphere are trained and equipped to
provide effective emergency rescue;
The Company or designee is notified before the employee(s) located outside the IDLH
atmosphere enter the IDLH atmosphere to provide emergency rescue; and
The Company or designee authorized to do so by the Company, once notified, provides
necessary assistance appropriate to the situation.
Employee(s) located outside the IDLH atmospheres will be equipped with:
Pressure demand or other positive pressure SCBAs, or a pressure demand or other
positive pressure supplied-air respirator with auxiliary SCBA; and either
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Appropriate retrieval equipment for removing the employee(s) who enter(s) these
hazardous atmospheres where retrieval equipment would contribute to the rescue of the
employee(s) and would not increase the overall risk resulting from entry; or
Equivalent means for rescue where retrieval equipment is not required.
Cleaning and Disinfecting
The Company shall provide each respirator user with a respirator that is clean, sanitary, and in
good working order. The Company shall ensure that respirators are cleaned and disinfected using
the Standard Operating Procedure (SOP): Cleaning and Disinfecting.
The respirators shall be cleaned and disinfected when:
Respirators issued for the exclusive use of an employee shall be cleaned and disinfected
as often as necessary to be maintained in a sanitary condition;
Respirators issued to more than one employee shall be cleaned and disinfected before
being worn by different individuals;
Respirators maintained for emergency use shall be cleaned and disinfected after each use;
Respirators used in fit testing and training shall be cleaned and disinfected after each use.
Cleaning and Storage of respirators assigned to specific employees is the responsibility of that
All respirators/SCBAs, both available for "General Use" and those on "Permanent Check-out",
will be inspected after each use and at least monthly. Should any defects be noted, the
respirator/SCBA will be taken to the Program Administrator. Damaged respirators will be
repaired or replaced. The inspection of respirators loaned on "Permanent Check-out" is the
responsibility of that trained Employee.
Respirators shall be inspected as follows:
All respirators used in routine situations shall be inspected before each use and during
All respirators maintained for use in emergency situations shall be inspected at least
monthly and in accordance with the manufacturer's recommendations, and shall be
checked for proper function before and after each use; and
Emergency escape-only respirators shall be inspected before being carried into the
workplace for use.
Respirator inspections include the following:
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A check of respirator function, tightness of connections, and the condition of the various
parts including, but not limited to, the face piece, head straps, valves, connecting tube,
and cartridges, canisters or filters;
Check of elastomeric parts for pliability and signs of deterioration; and
Self-contained breathing apparatus shall be inspected monthly. Air and oxygen cylinders
shall be maintained in a fully charged state and shall be recharged when the pressure falls
to 90% of the manufacturer's recommended pressure level. The Company shall determine
that the regulator and warning devices function properly
For Emergency Use Respirators the additional requirements apply:
Certify the respirator by documenting the date the inspection was performed, the name (or
signature) of the person who made the inspection, the findings, required remedial action,
and a serial number or other means of identifying the inspected respirator; and
Provide this information on a tag or label that is attached to the storage compartment for
the respirator, is kept with the respirator, or is included in inspection reports stored as
paper or electronic files. This information shall be maintained until replaced following a
Respirators are to be stored as follows:
All respirators shall be stored to protect them from damage, contamination, dust, sunlight,
extreme temperatures, excessive moisture, and damaging chemicals, and they shall be
packed or stored to prevent deformation of the face piece and exhalation valve.
Emergency Respirators shall be:
o Kept accessible to the work area;
o Stored in compartments or in covers that are clearly marked as containing
emergency respirators; and
o Stored in accordance with any applicable manufacturer instructions.
Repair of Respirators
Respirators that fail an inspection or are otherwise found to be defective will be removed from
service to be discarded, repaired or adjusted in accordance with the following procedures:
Repairs or adjustments to respirators are to be made only by persons appropriately trained
to perform such operations and shall use only the respirator manufacturer's NIOSH-
approved parts designed for the respirator;
Repairs shall be made according to the manufacturer's recommendations and
specifications for the type and extent of repairs to be performed; and
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Reducing and admission valves, regulators, and alarms shall be adjusted or repaired only
by the manufacturer or a technician trained by the manufacturer.
Breathing Air Quality and Use
The Company shall ensure that compressed air, compressed oxygen, liquid air, and liquid oxygen
used for respiration accords with the following specifications:
Compressed and liquid oxygen shall meet the United States Pharmacopoeia requirements
for medical or breathing oxygen;
Compressed breathing air shall meet at least the requirements for Grade D breathing air
described in ANSI/Compressed Gas Association Commodity Specification for Air, G-
7.1-1989, to include:
o Oxygen content (v/v) of 19.5-23.5%;
o Hydrocarbon (condensed) content of 5 milligrams per cubic meter of air or less;
o Carbon monoxide (CO) content of 10 ppm or less;
o Carbon dioxide content of 1,000 ppm or less; and
o Lack of noticeable odor.
Compressed oxygen will not be used in atmosphere-supplying respirators that have
previously used compressed air;
Oxygen concentrations greater than 23.5% are used only in equipment designed for
oxygen service or distribution;
Cylinders used to supply breathing air to respirators meet the following requirements:
o Cylinders are tested and maintained as prescribed in the Shipping Container
Specification Regulations of the Department of Transportation (49 CFR part 173
and part 178);
o Cylinders of purchased breathing air have a certificate of analysis from the
supplier that the breathing air meets the requirements for Grade D breathing air;
o Moisture content in breathing air cylinders does not exceed a dew point of -50
deg.F (-45.6 deg.C) at 1 atmosphere pressure;
o Breathing air couplings are incompatible with outlets for nonrespirable worksite
air or other gas systems. No asphyxiating substance shall be introduced into
breathing air lines; and
o Breathing gas containers shall be marked in accordance with the NIOSH
respirator certification standard, 42 CFR part 84.
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